diff --git a/src/backends/R/rsession.cpp b/src/backends/R/rsession.cpp
index 9dd79a22..08ebdad6 100644
--- a/src/backends/R/rsession.cpp
+++ b/src/backends/R/rsession.cpp
@@ -1,199 +1,199 @@
 /*
     This program is free software; you can redistribute it and/or
     modify it under the terms of the GNU General Public License
     as published by the Free Software Foundation; either version 2
     of the License, or (at your option) any later version.
 
     This program is distributed in the hope that it will be useful,
     but WITHOUT ANY WARRANTY; without even the implied warranty of
     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
     along with this program; if not, write to the Free Software
     Foundation, Inc., 51 Franklin Street, Fifth Floor,
     Boston, MA  02110-1301, USA.
 
     ---
     Copyright (C) 2009 Alexander Rieder <alexanderrieder@gmail.com>
     Copyright (C) 2018 Alexander Semke <alexander.semke@web.de>
  */
 
 #include "rsession.h"
 #include "rexpression.h"
 #include "rcompletionobject.h"
 #include "rhighlighter.h"
 #include "rvariablemodel.h"
 #include <defaultvariablemodel.h>
 
 #include <QTimer>
 #include <QDebug>
 #include <KProcess>
 
 #ifndef Q_OS_WIN
 #include <signal.h>
 #endif
 
 RSession::RSession(Cantor::Backend* backend) : Session(backend),
 m_process(nullptr),
 m_rServer(nullptr)
 {
     setVariableModel(new RVariableModel(this));
 }
 
 RSession::~RSession()
 {
     if (m_process)
         m_process->terminate();
 }
 
 void RSession::login()
 {
     qDebug()<<"login";
     if (m_process)
         return;
     emit loginStarted();
 
     m_process = new QProcess(this);
     m_process->setProcessChannelMode(QProcess::ForwardedErrorChannel);
     m_process->start(QStandardPaths::findExecutable(QLatin1String("cantor_rserver")));
 
     m_process->waitForStarted();
     m_process->waitForReadyRead();
     qDebug()<<m_process->readAllStandardOutput();
 
-    m_rServer = new org::kde::Cantor::R(QString::fromLatin1("org.kde.Cantor.R-%1").arg(m_process->pid()),  QLatin1String("/"), QDBusConnection::sessionBus(), this);
+    m_rServer = new org::kde::Cantor::R(QString::fromLatin1("org.kde.Cantor.R-%1").arg(m_process->processId()),  QLatin1String("/"), QDBusConnection::sessionBus(), this);
 
     connect(m_rServer, &org::kde::Cantor::R::statusChanged, this, &RSession::serverChangedStatus);
     connect(m_rServer,  &org::kde::Cantor::R::expressionFinished, this, &RSession::expressionFinished);
     connect(m_rServer, &org::kde::Cantor::R::inputRequested, this, &RSession::inputRequested);
 
     changeStatus(Session::Done);
     emit loginDone();
     qDebug()<<"login done";
 }
 
 void RSession::logout()
 {
     qDebug()<<"logout";
     if (!m_process)
         return;
 
     if(status() == Cantor::Session::Running)
         interrupt();
 
     m_process->kill();
     m_process->deleteLater();
     m_process = nullptr;
 
     Session::logout();
 }
 
 void RSession::interrupt()
 {
     if(!expressionQueue().isEmpty())
     {
         qDebug()<<"interrupting " << expressionQueue().first()->command();
         if(m_process && m_process->state() != QProcess::NotRunning)
         {
 #ifndef Q_OS_WIN
             const int pid=m_process->pid();
             kill(pid, SIGINT);
 #else
             ; //TODO: interrupt the process on windows
 #endif
         }
         foreach (Cantor::Expression* expression, expressionQueue())
             expression->setStatus(Cantor::Expression::Interrupted);
         expressionQueue().clear();
 
         qDebug()<<"done interrupting";
     }
 
     changeStatus(Cantor::Session::Done);
 }
 
 Cantor::Expression* RSession::evaluateExpression(const QString& cmd, Cantor::Expression::FinishingBehavior behave, bool internal)
 {
     qDebug()<<"evaluating: "<<cmd;
     RExpression* expr=new RExpression(this, internal);
     expr->setFinishingBehavior(behave);
     expr->setCommand(cmd);
 
     expr->evaluate();
 
     return expr;
 }
 
 Cantor::CompletionObject* RSession::completionFor(const QString& command, int index)
 {
     RCompletionObject *cmp=new RCompletionObject(command, index, this);
     return cmp;
 }
 
 QSyntaxHighlighter* RSession::syntaxHighlighter(QObject* parent)
 {
     return new RHighlighter(parent, this);
 }
 
 void RSession::serverChangedStatus(int status)
 {
     qDebug()<<"changed status to "<<status;
     if(status==0)
     {
         if(expressionQueue().isEmpty())
             changeStatus(Cantor::Session::Done);
     }
     else
         changeStatus(Cantor::Session::Running);
 }
 
 void RSession::expressionFinished(int returnCode, const QString& text, const QStringList& files)
 {
     if (!expressionQueue().isEmpty())
     {
         RExpression* expr = static_cast<RExpression*>(expressionQueue().first());
         if (expr->status() == Cantor::Expression::Interrupted)
             return;
 
         if (!files.isEmpty())
             expr->showFilesAsResult(files);
 
         if(returnCode==RExpression::SuccessCode)
             expr->parseOutput(text);
         else if (returnCode==RExpression::ErrorCode)
             expr->parseError(text);
 
         qDebug()<<"done running "<<expr<<" "<<expr->command();
         finishFirstExpression();
     }
 }
 
 void RSession::runFirstExpression()
 {
     if (expressionQueue().isEmpty())
         return;
 
     RExpression* expr = static_cast<RExpression*>(expressionQueue().first());
     qDebug()<<"running expression: "<<expr->command();
 
     expr->setStatus(Cantor::Expression::Computing);
     m_rServer->runCommand(expr->internalCommand(), expr->isInternal());
     changeStatus(Cantor::Session::Running);
 }
 
 void RSession::sendInputToServer(const QString& input)
 {
     QString s=input;
     if(!input.endsWith(QLatin1Char('\n')))
         s+=QLatin1Char('\n');
     m_rServer->answerRequest(s);
 }
 
 void RSession::inputRequested(QString info)
 {
     if (expressionQueue().isEmpty())
         return;
 
     emit expressionQueue().first()->needsAdditionalInformation(info);
 }